Printing-press punch.



I. 0. WHITMAN.

PRINTING PRESS PUNCH.

APPLIOAIION FILED MAY 31, 1911.

1,029,481 Patented June 11, 1912.

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COLUMBIA PLANOGRAPH C0..wAsHlN0'IoN D c IRVIN C. WHITMAN, 0F DEXTER, MAINE.

PRINTIKG-PRESS PUNCH.

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Specification of Letters Patent.

Patented June 11 1912..

Application filed May 31, 1911. Serial No. 630,309.

To alt whom it may concern:

Be it known that I, IRVIN C. VVHITMAN, a citizen of the United States, residing at Dexter, in the county of Penobscot and State of Maine, have invented new and useful Improvements in Printing- Press Punches, of which the following is a specification.

The invention relates to a punch, and more particularly to the class of punches for platen printing presses.

The primary object of the invention is the provision of a punch in which a sheet of paper, or a card may be punched simultaneously with the printing thereof, without interfering with the type-form within the chase or its furniture.

Another object of the invention is the provision of a punch in which paper or a card may be perforated during the printing process while in a printing press, without tearing of the said paper or card, or present ing ragged edges thereto.

A further object of the invention is the provision of a punch which is simple in construction, thoroughly reliable and efficient in operation, and inexpensive in manufacture.

"With these and other objects in View, the invention consists in the construction, combination and arrangement of parts, as will be hereinafter more fully described, illustrated in the accompanying drawings, and pointed out in the claim hereunto appended.

1n the drawings: Figure 1 is a side elevation of a punch constructed in accordance with the invention, the same being partly in section. Fig. 2 is a fragmentary vertical sectional view through a type-form, the

punch being mounted upon the platen and shown in side elevation. Fig. 3 is a fragmentary plan view of the platen, showing the tympan and the manner of mounting the punch therein. Fig. 4: is a top plan View of the punch. Fig. 5 is a bottom plan View thereof. Fig 6 is an enlarged vertical longitudinal sectional View through the punch.

Similar reference characters indicate corresponding parts throughout the several views of the drawings.

Referring to the drawings by numerals, 5 designates the bed of the printing press, 6 the platen, and 7 the tympan, which is composed of a plurality of sheets mounted upon the platen in the ordinary well-known manner. Upon the bed 5 is mounted the type chase 8, in which is looked a form of type 9, and quads 10, the latter being held within the chase by means of furniture 11 in the ordinary well-known manner, all of which are common in printers appliances.

Mounted upon the platen 6 is a. punch, comprising an elongated body 12, preferably constructed from metal, the same being provided with a longitudinal slot 13 opening through one end thereof to form spaced parallel limbs 1d and 15, respectively, the limb 15 being designed as a base, while the limb 14 is designed as a head, and upon the latter, at one end thereof, is formed an outwardly extending boss 16, the same being provided with a bore 17, opening through the outer end of the boss and communicating with the slot 13, while the base 15 is formed with an opening 18, alining with the said bore 17 in the boss 16 on the head. The bottom face of the body 12 is formed with a longitudinal channel or groove 19, in which is arranged aflatleaf ejector spring 20, on which is mounted at one end thereof an ejector lug 21, the latter working within a ring member 22 detachablyvthreaded in the opening 18 in the base 15, the ring member 22 being cut away to form a seat 23 for accommodating the ejector spring 20 which has its opposite end fixed to the body 12 by means of a screw member 24.

Arranged within the bore 17 in the boss 16 on the head 14: is a punch 25, the inner end of which is adapted to work against the ejector lug 21, while its opposite end is reduced to form a tapping extension 26 working through a central perforation provided in a removable abutment sleeve 27 threaded in the outer end of the bore 17 in the boss, the said punch 25 at the point of union of the tapping extension 26 therewith is formed with an annular shoulder 28, the outer face of which normally engages the inner face of the sleeve 27, while its inner face provides a seat for one end of a coiled expansion spring 29 surrounding the punch 25 and arranged within the bore 17 in the boss, the opposite end of said spring being seated against a ring 30 fixed within the inner end of the bore, and through which works the punch 25, when approaching the ejector lug 21 in the operation of the printing press.

The body 12 of the punch is mounted upon the platen 6 by cutting out the first sheet of the tympan 7 on the platen, the cut in the said first sheet being correspondingly shaped to the punch. After the first sheet of the tympan 7 is cut, the punch body 12 is glued or otherwise secured to the second sheet of the tympan within the opening cut in the first sheet thereof, so that the grooves 18 in the body will lie flush with the outer face of the first sheet of the tympan, thereby permitting the paper or card, when laid upon the tympan, to beinserted in the slot 13 in the punch, and when the platen 6 is moved toward thebed, the type extension 26 of the punch will strike the furniture 11, causing said punch to be moved inwardly toward the ejector lug 21, thereby perforating the sheet of paper or card inserted in the slot 13, simultaneously with the impression of the type 9 upon the sheet of paper or card, during the printing process.

When the platen 6 is moved away from the type form, the spring 20 will force the ejector lug 21 outwardly through the ring 22, thereby removing the severed material from the perforation formed by the punch, it being understood that the punch will be retracted within the bore 17 in the boss 16 by the action of the spring 29, when the platen 6 is moved away from the type form.

From the foregoing taken in connection with the accompanying drawings, it is thought that the construction and operation of the invention will be readily understood without requiring a more extended explanation.

What is claimed is:

The combination with a tympan having a slit in its outermost sheet, of a punch, comprising an elongated body provided with a slot longitudinally disposed. therein and opening through one end, the sai d slot being of uniform size throughout .itseX- tent, an internally threaded boss formed on and projecting outwardly from the body at the slotted end thereof, a sleeve adjustably engaged in one end of the said boss, a ring adjustably engaged in the opposite end thereof, a punch movably mounted in the boss and adapted to work through the ring and having a tapping stem through the sleeve, a coiled expansion spring resting upon the ring and acting upon the punch to hold the saine in normal position, and a spring-held ejector lug carried by the body and disposed in the path of movement of the said punch.

In testimony whereof I afliX my signature in presence of two witnesses.

IRVIN C. lVHITMAN. WVitnesses:

F. D. DEARTH, S. M. LEIGHTON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

- Washington, D. C.

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